<template>
	<view>
		<my-search @click="gotoSearch"></my-search>
		<view class="socoll-view-container">
			<scroll-view class="left-scroll-view" scroll-y="true" :style="{height: wh+'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i=== active?'active':'']" @click="activeChange(i)">{{ item.cat_name }}</view>
				</block>
				
				
			</scroll-view>
			<scroll-view scroll-y="true" :style="{height: wh+'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">
						{{ item2.cat_name }}
					</view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon"></image>
							<text>{{ item3.cat_name }}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				wh:0,
				cateList:[],
				active: 0,
				cateLevel2:[],
				scrollTop:0
			};
		},
		onLoad(){
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50
			this.getCateList()
		},
		methods: {
		async	getCateList(){
			const {data: res } = await	uni.$http.get('/api/public/v1/categories')
			if(res.meta.status !==200) return uni.$showMsg()
			this.cateList = res.message
			 this.cateLevel2 = res.message[0].children
			},
			activeChange(i){			
				this.active = i
				
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop = this.scrollTop ===0? 1 : 0
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' +item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
			
		}
	}
</script>

<style lang="scss">
.socoll-view-container{
	display: flex;
	.left-scroll-view{
		width: 120px;
		
		.left-scroll-view-item{
			background-color: #F7F7F7;
			line-height: 60px;
			text-align: center;
			font-size: 12px;
			&.active{
				background-color: #FFFFFF;
				position: relative;
				&::before{
					content: '';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #C00000;
					position: absolute;
					top: 50%;
					left: 0;
					transform: translateY(-50%);
				}
			}
		}
	}
}
.cate-lv2-title{
	font-size: 12px;
	font-weight: bold;
	text-align: center;
	padding: 15px 0;
	scrollTop: 0 
}
.cate-lv3-list{
	display: flex;
	flex-wrap: wrap;
	.cate-lv3-item{
		width: 33.33%;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		margin-bottom: 10px;
		image{
			width: 60px;
			height: 60px;
		}
		text{
			font-size: 12px;
		}
	}
}
</style>
